Matching (9) Match items in column A to column B

Column a Column b
1.
A.
Asthenosphere
2.
B.
Mantle
3.
C.
Dense
4.
D.
Convection
5.
E.
Crust
6.
F.
Lithosphere
7.
G.
Core
8.
H.
Inner Core
9.
I.
Outer Core